# Full text of "The Flow Of Gases In Furnaces"

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APPENDIX VII

Taking up the design computations for a 50-tonne open-
hearth furnace regenerator, the following assumptions are made:

Melting capacity of furnace........................    50 tons

Number of heats made per week...................    15

Average time per heat, charge to tap...............      8 hours 20 minutes

Coal consumption per ton of steel..................  300 kg (660 Ib)

.Average number of reversals per hour....:..........      3

Secondary air supply, per cent of theoretical.........      140

GASES OF COMBUSTION ON BURNING 100 VOLUMES OF HAW PRODUCER GAS

Vol.                Calories
02
C02
H2O
N2

H2
11 26X 58 2= 655
5 63

11.26
22.52

CH4 CO
3.24X195.2= 632 . 29 65 X 68 2=2022
6.48 14 83
3.24 29 65
6.48
25.92 59.32

O2
0 19

CO2
1 25            .

1.25

N2
50 69      ......

H2O
3 72

3 72

100.00                 3309
26.94 0.19
34.14
21.46
158.45 0.76

26.75
34.14
21.46
157.69

COMBUSTION OF 100 MOLECULAR VOLUMES OF GAS

Air

Products of Combustion in Molecular Volumes

Supply, Per
Molecular
Excess
Air
02
C02
H20
Excess
N2
Total

Cent
Volumes

2

100
133.75
0.00
0.00
34.14
21.46
0.00
157.69
213.29

120
160.50
26.75
5.35
34.14
21.46
21.40
179.09
240.09

140
187.25
53.50
10.70
34.14
21.46
42.80
200.49
266.79

180
240.75
107.00
21.40
34.14
21.46
85.60
243.29
320.29

These values may be evaluated as cubic feet, cubic meters, etc.

A portion of this air is required for the oxidization of certain
elements in the charge and additions.

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